Space Images For Students
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Neptune's moon Triton
Neptune Cold Triton
With its icy surface, Neptune's moon Triton is one the coldest objects in the solar system. It is also the largest of Neptune's moons. Ice volcanoes spout what is probably a mixture of liquid nitrogen, methane and dust, which instantly freezes and then snows back down to the surface.

This view of the moon was captured by Voyager 2 during its flyby in 1989.
Image credit: NASA/JPL